Warning: include(01-04-57.php) [ function.include ]: failed to open stream: No such file or directory in /home/content/06/11607406/html/sortcode/content.php on line 3.
San Tan Valley, AZ Weather. The average temperature of San Tan Valley is 71.43Â°F, which is much higher than the Arizona average temperature of 65.97Â°F and is much higher than the national average temperature of 54.45Â°F. Historical Weather. Heating Cost Index, #76.
California Weather > Grass Valley Weather. Grass Valley, CA climate is warm during summer when temperatures tend to be in the 70's and cold during winter when temperatures tend to be in the 40's.